Apparatus for splicing a yarn with newly spun yarn in open end spinning

ABSTRACT

A yarn end is semi-automatically spliced with yarn newly formed in a rotary spinning chamber. A control device has an inserting position for guiding the yarn end by guides along a devious path, whereupon the yarn end is inserted into the spinning chamber. When the control device is manually turned to a normal position, the guides release the yarn which now extends along a shorter path between a withdrawal roller and a take-up roller which are actuated by the control device in the normal position. The slack in the yarn end facilitates the connection between the yarn end and the newly spun yarn in the spinning chamber.

United States Patent [191 Nemecet al.

[ APPARATUS FORSPLICING A YARN WITH NEWLY SPUN YARN IN OPEN END SPINNING [75] Inventors: Jiri Nemec, Kostelec Nad Orlici;

Ladislav Bures, Usti Nad Orlici; Jaroslav Rajnoha, Tyniste Nad Orlici, all of Czechoslovakia [73] Assignee: Elitex Zavody Textilniho Strojirenstvi Generalni Reditelstvi, Liberec, Czechoslovakia [22] Filed: May I9, 1972 [21] Appl. No.: 255,051

[30] Foreign Application Priority Data May 24, l97l Czechoslovakia 3772-7] [52] US. Cl. 57/34R, 57/5895 [51] Int. Cl. DOlh 15/00, DOlh 1/12 [58] Field of Search 57/34 R, 58.89-58.95

[56] References Cited UNlTED STATES PATENTS 3,455,095 7/1959 Makeham et al. 57/34 R [4511 June it, 1974 3,695,017 l0/l972 Hori et al 57/34 R Primary Examiner.lohn Petrakes Attorney, Agent, or Firm-Michael S. Striker 5 7 ABSTRACT A yarn end is semi-automatically spliced with yarn newly formed in a rotary spinning chamber. A control A device has an inserting position for guiding the yarn end by guides along a devious path, whereupon the yarn end is inserted into the spinning chamber. When the control device is manually turned to a normal position, the guides release the yarn which now extends along a shorter path between a withdrawal roller and a take-up roller which are actuated. by the control device in the normal position. The slack in the yarn end facilitates the connection between the yarn end and the newly spun yarn in the spinning chamber.

13 Claims, 6 Drawing Figures PATENTEDJUNH m4 f 3:815:34?

SHEET 1!)? 4 1 APPARATUS FOR SPLICING A YARN WITH NEWLY SPUN YARN IN OPEN END SPINNING BACKGROUND OF THE INVENTION The present invention is concerned with a method of splicing or piecing together yarn in open end spinning machines in which a yarn end is introduced by the action of underpressure at a predetermined length into a rotating spinning chamber, and thereafter withdrawn from the spinning chamber by withdrawing means, and wound upon a take-up spool. The present invention also relates to an apparatus for carrying out the splicing in a simple and efficient manner.

In open end spinning machines according to the prior art, yarn splicing is performed either manually by an operator, or automatically. In the manual operation, the yarn end is inserted into the spinning chamber by the operator, and as soon as the yarn end in the rotary spinning chamber contacts the rope or ribbon of fibers, the yarn is withdrawn from the spinning chamber and wound upon a winding bobbin or spool which has been brought into contact with a rotating winding drum by theoperator. Thereafter, the withdrawn yarn is slipped between two cooperating withdrawing rollers, and the spinning operation is carried out.

This operation is carried out upon starting of the machine, but also when a yarn breakage has been occurred in an individual spinning unit of the plurality of spinning units forming the spinning machine. When a yarn breakage occurs, and is to be corrected, the end of the broken yarn is introduced into the outletof the spinning chamber, and is sucked by the negative pressure in the'rotary spinning chamber to the annular collecting surface where fibers are deposited. When the part of the yarn between the take-up spool and the withdrawal rollers, whichare, located adjacent the spinning chamber, is tensioned, the tension indicates that the yarn end has connected in the spinning chamber with the newly formed fiber rope or ribbon. In this manner, a successful yarn splicing is indicated. However,.at this moment, the operator must bring the takespool. Splicing of a plurality of yarns in this manner simultaneously in all spinning units of an open end spinning machine, is fairly reliable, and a certain percentage of yarn ends is spliced. In the case of a failure of splicing of a yarn, the respective: yarn end must be spliced by the above-described manual operation.

It is a disadvantage of the manual yarn splicing operation that it entirely depends on the skill of the operator, and also on the speed of the yarn withdrawal. When the yarn speed is very high, as is desirable for efficient operation of the spinning machine, the manual yarn splicing is almost impossible. In view of the fact that in the manual splicing operation, the operator can attend only a single spinning unit at a time, the idle time of other spinning units in which yarn breakage took place,

is increased.

Furthermore, it is required that the open end spinning machine manufactures a continuous yarn so that the contact of the yarn end during repeated piecing together with the separate fiber ribbon, should be as short as possible. When the yarn is manually spliced, it is necessary to pay far more attention to the actual splicing operation than to the length of the connecting portion between the fiber ribbon and the yarn end, a problem which is partially solved by the automatic simultaneous yarn splicing in all spinning units of the machine, as deup spool into contact with the continuously rotating be withdrawn from the spinning chamber, is slipped into the nip or bight of two withdrawing rollers.

In the automatic yarn splicing method, the operation is simultaneously performed in all spinning units upon a stoppage of the machine requiring a restarting of the machine. For that purpose, the open end spinning machine is provided with a device which performs within predetermined and adjusted time intervals, depending on the yarn length required for the splicing operation, a changing of the direction of rotation of both the withdrawing and the wind-up rollers whereby the yarn ends are introduced into the spinning chambers of all spinning units simultaneously. Meanwhile, feeding of separate fibers into the rotary spinning chamber is started, and the yarn end introduced into the spinning chamber contacts the fiber ribbon. At this moment, the rotary motion of both, the withdrawing and the take-up roller, is reversed to the original withdrawal direction, so that withdrawing of the yarn from the spinning chamber begins, and the withdrawn yarn is wound up on a take-up scribed above. However, for the simultaneous yarn splicing in all units, an expensive device for reversing the direction of rotation of both, the withdrawing and take up rollers, is necessary. Moreover, such a device must be divided into a plurality of parts, interconnected by couplings to facilitate assembly and transport,

It is one object of the invention to overcome the disadvantages of prior art splicing apparatus and methods, and provide an apparatus and method for efficiently, reliably, and quickly carrying out yarn splicing operations in open end spinning machines.

Another object of the invention is a semi-automatic yarn splicing operation carried out by a manually operated control device.

Another object of the invention is to provide a manually operated control device which automatically provides slack in a yamend to be spliced, as required for connecting the yarn end with the fiber ribbon in the rotary spinning chamber.

Another object of the invention is to obtain by opera tion of the control device, the transport of the spliced yarn end by withdrawal means and the winding up on a take-up spool.

SUMMARY OF THE INVENTION With these objects in view, the present invention provides a semi-automatic method in which a yarn section between the withdrawal roller and the winding roller is displaced along a devious path, and then released so that the slack of the yarn section can be used for fortning a connection between the yarn and the fiber ribbon in the rotary spinning chamber.

Preferably, the guiding of the yarn along the devious path is effected for a control device having guides for the yarn and being turnable between an inserting position in which the guides guide the yarn along a devious path, and an operative position in which the guides release the yarn. In the latter position, the withdrawal means and the take-up means are actuated so that the automatically spliced yarn is transported and wound The apparatus of the invention includes a control device which is mounted between the withdrawing roller means and the take-up roller means of the machine, and is angularly movable in a direction perpendicular to the axes of rotation of the withdrawing and take-up rollers.

One embodiment of the apparatus comprises withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing posi tion for withdrawing yarn from a rotary spinning chamber; take-up means having an inoperative position, and a winding up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between the withdrawal means and the take-up means, and having a yarn inserting position for guiding a yarn from the take-up means along a devious path to the withdrawal means, and for placing the take-up means and the withdrawal means in the inoperative position so that the end of the guided yarn can be inserted into the rotary spinning chamber.

The control device has also an operative position for guiding the yarn along a path shorter than'the devious path, and for placing the withdrawal means in the withdrawing position and take-up means in the take-up position. Consequently, the yarn inserted into the outlet of the spinning chamber connects with the newly spun yarn in the spinning chamber, taking up the slack in the yarn, and is transported by the withdrawing means to the take-up means.

In the preferred embodiment of the invention, the control device includes a yarn guiding and withdrawal controlling first part mounted on a support shaft, and a take-up controlling second part also mounted on the support shaft and connected with the first part for angular movement together between first and second relative angular positions in which the control device is in the inserting and operative positions, respectively.

Guide means for the yarn are mounted on the first part, together with a control roller which cooperates with a withdrawal roller in the operative position of the control device. The second part mounts a support roller which holds the take-up spool in an inoperative position spaced from a winding roller when the first and second parts are in the first angular position corresponding to the inserting position of the control device.

When the first and second parts are manually placed in the second angular position, the support roller releases the take-up spool for contact with the continuously rotating winding roller so that the yarn is wound upon the take'up spool while the control device is in the operative position.

The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a schematic side elevation, partially in section, illustrating an embodiment of the invention in a yarn inserting and splicing condition;

FIG. 2 is a schematic side elevation, partially in section, illustrating the embodiment of FIG. 1 in an operative position in which spliced yarn is wound up by a take-up spool;

FIG. 3 is a schematic side elevation, taken from the opposite side as compared with FIGS. 1 and 2, and illustrating the apparatus in the inserting and splicing position;

- FIG. 4 is a side elevation corresponding to FIG. 3, but illustrating the apparatus in the operative position in which the spliced yarn is wound up on the take-up spool;

FIG. 5 is a fragmentary perspective view illustrating the control device used in the apparatus shown in FIGS. 11 to 4 in the yarn inserting and splicing position; and

FIG. 6 is a fragmentary perspective view illustrating the control device of FIG. 5 in an operative position in which the yarn is wound up on a take-up spool.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring first to FIG. 2, an apparatus is shown in which a rotary spinning chamber 35 discharges a yarn 21 which is transported by a continuously rotating withdrawal roller 1 cooperating with a control roller 19 to transport the yarn 21 to a continuously rotating winding roller 2 which cooperates with a take-up spool 30 which is rotated by winding roller 2 to form a wound up package of yarn 21 on take-up spool 30. Take-up spool 30 is mounted on a lever arm 30a pivotally supported on supporting means 70, and is urged by gravity into contact with the continuously rotating winding roller 2. FIG. 2 illustrates a normal operative position of the apparatus.

FIG. 1 illustrates a yarn inserting position of the apparatus in which control roller 19 is spaced from the continuously rotating withdrawing roller 1 so that no yarn is transported. A support roller 31 has been operated in a manner which will be described hereinafter to support the take-up spool 30, so that the same is not driven by the continuously operating winding roller 2.

Between the continuously rotating withdrawing roller 1 and winding roller 2, a control device 3 according to the invention is arranged. The control device 3 includes a first part 7 mounted on a support shaft 4 for angular movement, and a second part 8 also mounted on support shaft 4 for angular movement. The first part 7 includes a lever arm 701 mounted on support shaft 4 for angular movement, and a control lever 702 mounted on lever arm 701 for angular movement about a pivot 18.

Control lever 702 carries the control roller 19 which is correlated with the withdrawal roller 1, and a yarn guide 28. As best seen in FIG. 3, lever arm 701 is provided with a pivot 23 on which a turntable portion 33 of a yarn guide 321 is mounted, and connected by a link 34 and a pivot 42 with the arm 8 of the control device 3. A clamping means 20 having a projection 22 is also mounted on lever arm 701 secured by the pivot screw 23 and pivot 18.

The first part 7 and the second part 8 of the control device 3, which are both angularly movable about support shaft 4, are connected with each other by a resilient element 9, shown to be a coil spring, mounted in a telescopic sleeve 10 which bears with one end on a pin 81 projecting from the part 8 while spring 9 bears on a pin 71 supported by the part 7, and more specifically by the lever arm 701. The resilient element 9, moves between the positions shown in FIGS. 1 and 2 when the parts 7 and 8 are displaced between the angular positions shown in FIGS; 1 and 2 so that the control device 3 is arrested in two relative angular positions set by manual operation of the part 7, and more specifically of the control lever 702 which has a finger engaging end portion 7.03 shown in FIGS. 5 and 6.

In the inserting position of the control device, shown in FIGS. 1, 3 and 5, the relative angular position of the two lever parts 7 and 8 is determined by fixed stop 13 including a platemounted on a holding means 14 which is fixedly secured to supporting shaft 4. A resilient stop 15 is secured to the holding plate 13, and partly covers an opening 17 in the holding plate 13. Stop 15 consists of one or several leaf springs with outwardly bent end portions.

In the inserting position of the control device 3, a lateral projection 16 on sleeve 10 passes through opening 17 in the fixed stop plate 13, for securing the two lever parts 7, 8 in the inserting position of the control device 3 shown in FIG. 1. The projection 16 also assures a synchronous displacement of the two parts 7, 11 when the same are angularly displaced to the operative position shown in FIG. 2. I

The end of the part 8 is formed as a support lever which partly surrounds the winding roller 2, and carries at its upper end, .a support and braking roller 31 which As noted above, the control lever 702 is mounted on the lever arm 701 and forms with the same the part 7. Control lever 702 has a slot extending in circumferential direction in relation to the pivot 18. A screw 23 is secured to a portion of lever arm 702, and has a head located in slot 25, and engaged by a ball 26 biassed by a spring 27 so that the control lever 702 can be snapped between the position shown in FIG. 1 and the position shown in FIG. 2. In the position shown in FIG. 1,-control roller 19 engages the clamping means 20, 22, see also FIGS. 3 and 4, so thatthe respective portion of yarn 21 is clamped. The clamping of the yarn by clamping means 20, 22 must be carried out only in the inserting position of the device, and clamping means 20, 22 releases control roller 19 in the operative position of the apparatus so that it can rotate driven by the withdrawal roller 1 as required for transporting the yarn 21 I through yarn guide 28, and over roller 19 to yarn guide 321 which, as explained above, is displaced by the linkage 34, best seen in FIGS. 3 and 4 when the relative angular position between parts 7 and 8 is changed.

In the position of FIG. I, the guides 28 and 321, together with control roller 19, guide the yarn 211 along a devious path. When the control device 3 is shifted to the normal operative position shown in FIG. 2, the guides 28 and 321 turn to inoperative positions releasing the yarn 21 which extends now along a shorter path, producing some slack in the yarn.

A splicing operation according to the present inven tion is performed as follows:

In the inserting position shown in FIGS. 1 and 3, parts 7 and 8 are in a first angular position in which they were placed by manual operation of part 7 by means of control lever 702. Control roller 19 and withdrawal rol ler 1 are spaced and do not cooperate, and support roller 31 holds the take-up spool at a distancefrom the continuously rotating winding roller 2.

The operator withdraws a yarn end from the take-up V in the projecting position shown in FIG. 1, and then over control roller 19 through guide 28. During this threading in of yarn 21, clamping means 22 is spaced .from control roller 19 due to the selected position of control lever 702. Thereupon, control lever 702 is manually turned about pivot 18 so that clamping means 20, 22 engages yarn 21 on control roller 19 and clamps yarn 21 which is thus secured against displacement and sliding on the surface of control roller 19.

With the yarn so positioned, the yarn end is inserted into the outlet of the rotary spinning chamber 35 which exerts suction.

In the inserting position shown in FIGS. 1 and 3, the yarn 21 is disposed along a devious path, taking up a greater length of yarn as required between the take-up spool 30 and the withdrawing roller 1 in the operative position shown in FIGS. 2 and 4.

The part 7 of the control device 3 is now manually operated and turned about supporting shaft 4 so that the control roller 19 is moved toward withdrawal roller 1 which brings the guide 28 to the inoperative position shown in FIGS. 2 and 4 in which guide 24 releases yarn 21.

At the same time, the linkage transmission 34, 42, 33 is operated clue to the relative angular movement between the parts 7 and 8, and guide 321 is moved to the inoperative position shown in FIGS. 2 and 4, releasing yarn 21.

At the same time through the intermediary of the re silient means 9, 10, part 8 has been turned to the position shown in FIGS.'2 and 4 so that support roller 3] permits the engagement of the winding roller 2 by the package wound on take-up spool 30,or by the take-up spool itself, resulting in winding up of the yarn 21 on the take-up spool. During the shifting of the control device 3 from the inserting position shown in FIG. 1 to the operative position shown in FIG. 2, the retraction of the guides 321 and 28 produces a certain slack in the yarn 21 which now extends along a shorter path, and this slack is taken up by the connection between the fiber ribbon newly formed in the rotary spinning chamber and the end of yarn 21.

The correct position of all parts of the apparatus during the shifting of the control device 3 from the inserting position to the operative position, is assured by the positioning locking projection 16 on sleeve 10 on the resilient coil spring 9 which gradually moves out of the opening 17 in the fixed stop plate 13 while parts 7 and 8 tilt from the first angular position shown in FIG. 1 to the second angular position shown in H0. 2. Only when the end of the locking projection 13 has left the opening 17 in the fixed stop plate 13, support roller 31 releases the take-up spool 30, and at this moment, the withdrawal of yarn 21'from the spinning chamber 35 begins. Before this takes place, and withdrawal means 1, 19 start to withdraw the yarn from the spinning chamber 35, the yarn end was connected with the fiber ribbon on the collecting surface inside the rotary spinning chamber 35 since the ribbon was wrapped about the end of the yarn and twisted to the form of the yarn. in this way, the yarn end is spliced to the newly formed fiber ribbon, while the slack of yarn 21 is taken up, whereupon the yarn can be withdrawn by the withdrawing roller 1 cooperating with control roller 19 to be wound up on the take-up spool 30.

The tilting of the control device from the yarn inserting position to the operative position takes place by manually tilting lever part 7,701, 702 for a very short time period, whereupon parts 7 and 8 snap to the operative angular position due to the action of spring 9 whereupon all required and above-described operations automatically take place.

The method and apparatus of the invention has the advantage that the time required for splicing a yarn in a spinning unit is much shorter than in prior art apparatus, and that the yarn splicing takes place with absolute reliability so that it need not be repeated.

Another advantage of the apparatus of the invention is that it permits yarn splicing by a very easy manual operation, while the quality of the splicing or piecing together is very high. The yarn splicing operation can be performed even at very high withdrawing speeds of the yarn, in which manual splicing without the control device of the invention is practically impossible.

It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of methods for splicing yarn with newly spun yarn in a spinning chamber differing from the types described above.

While the invention has been illustrated and described as embodied in an apparatus including manually operated yarn guiding control means which simultaneously provide a yarn reserve for splicing, and set the apparatus to transport the spliced yarn to a take-up spool, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the'meaning and range of equivalence of the following claims.

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.

We claim: 1. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position. and a winding-up position for winding up a yarn withdrawn by said withdrawal means; a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up slack, and is transported to said take-up means; and supporting means, including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said positions, said control device including a yarn guiding and withdrawal controlling first part mounted on said support shaft, a takeup controlling second part mounted on said sup port shaft, and resilient means connecting said first and second parts for joint angular movement between first' and second relative angular positions in which said control device is in said inserting and operative positions, respectively. p

2. Apparatus as claimed in claim ll wherein said with drawal means includes a withdrawal roller; wherein said take-up means include a winding roller; wherein said rollers have parallel axes; further comprising supporting means including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said inserting position and said operative position.

3. Apparatus as claimed in claim 1 wherein said resilient means includes a spring having ends connected with said first and second parts, respectively, and a sleeve enveloping said spring and having a lateral locking projection; wherein said supporting means includes a locking member with an opening in which said locking projection is located in said inserting position for locking said first and second parts in said first relative angular position.

4. Apparatus as claimed in claim 1 wherein said control device includes first and second parts moving relative to each other between first and second angular positions when said control device is in said inserting and operative positions, respectively; and guide means mounted on said first part and guiding said yarn along said devious path in said first angular position, and releasing said yarn in said second angular position when said control device is in said operative position.

5. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said .withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said slack, and is transported to said take-up means, said control device including a yarn guiding and withdrawal controlling first part having a lever portion mounted on a supporting shaft and a manually operated control lever mounted on said lever portion for angular movement between first and second control position, a withdrawal control roller on said control lever, and clamping means mounted on said lever portion for clamping said yarn onsaid control roller in said first control position when said device is in said inserting position and releasing said control roller in said second control position so that said control roller cooperates with said withdrawal means in said second angular position of said first part when said control device is in said operative position, said control device further including a take-up controlling second part.

6. Apparatus as claimed in claim wherein said first part includes guide means for guiding the yarn along said devious path in said first angular position and being retracted from said yarn in said second angular position so that said yarn extends along said shorter path between said withdrawal means and said take-up means in said second angular position.

7. Apparatus as claimed in claim 6 wherein said guide means of said first part of said control device include a yarn guide mounted on said control lever and moving with said control lever and said first part.

8. Apparatus as claimed in claim 7, wherein said withdrawal means includes a continuously rotating withdrawal roller on which said control roller abuts in said second angular position of said first part while said control lever is in said second control position; and wherein said yarn guide places said yarn between said control roller and withdrawal roller during movement of said first part to said second angular position so that said yarn is withdrawn in said operative position of said control device.

9. Apparatus as claimed in claim 6 wherein said guide means include a yarn guide mounted on said first part for angular movement, a link connected at one end with said yam guide, and a pivot connecting the other end of said link with said second part so that said yarn guide moves between a yarn guiding position and an inoperative position when said first and second parts move between said first and second angular positions, respectively.

10. Apparatus as claimed in claim 9 wherein said guide means include an other yarn guide mounted on said first part for guiding said yarn along said devious path in said first angular position, and being retracted from said yarn in said second angular position of said first and second parts when said control device is in said operative position. 7

ll. Apparatus as claimed in claim 5, wherein said second part includes a support lever means mounted on said supporting shaft, and a support roller on the end of said lever means; wherein said take-up means include a continuously rotating winding roller and a takeup spool; wherein said support roller supports in said first angular position of said first and second parts said take-up spool spaced from said winding roller, and permits abutment of said take-up spool on said winding roller in said second angular position of said first and second parts so that said yarn is wound up on said takeup spool in said operative position of said control device.

12. Apparatus as claimed in claim 11 wherein said take-up means include a lever arm rotatably supporting said take-up spool and biassed by gravity to move said take-up spool in abutment with said support roller and said winding roller.

13. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber;

take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said'control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said slack, and is transported to said take-up means, said controldevice including first and second parts moving relative toeach other between first and second'angular positions when said control device is in said inserting and operative positions, respectively, guide means mounted on said first part for angular movement, and link means connecting said guide means with said second part so that in said first angular position said guide means is in an operative position for guiding said yarn along said devious path, and releases said yarn in said second angular position when said control device is insaid operative position. 

1. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up slack, and is transported to said take-up means; and supporting means, including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said positions, said control device including a yarn guiding and withdrawal controlling first part mounted on said support shaft, a take-up controlling second part mounted on said support shaft, and resilient means connecting said first and second parts for joint angular movement between first and second relative angular positions in which said control device is in said inserting and operative positions, respectively.
 2. Apparatus as claimed in claim 1 wherein said withdrawal means includes a withdrawal roller; wherein said take-up means include a winding roller; wherein said rollers have parallel axes; further comprising supporting means including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said inserting position and said operative position.
 3. Apparatus as claimed in claim 1 wherein said resilient means includes a spring having ends connected with said first and second parts, respectively, and a sleeve enveloping said spring and having a lateral locking projection; wherein said supporting means includes a locking member with an opening in which said locking projection is located in said inserting position for locking said first and second parts in said first relative angular position.
 4. Apparatus as claimed in claim 1 wherein said control device includes first and second parts moving relative to each other between first and second angular positions when said control device is in said inserting and operative positions, respectively; and guide means mounted on said first part and guiding said yarn along said devious path in said first angular position, and releasing said yarn in said second angular position when said control device is in said operative position.
 5. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawIng position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said slack, and is transported to said take-up means, said control device including a yarn guiding and withdrawal controlling first part having a lever portion mounted on a supporting shaft and a manually operated control lever mounted on said lever portion for angular movement between first and second control position, a withdrawal control roller on said control lever, and clamping means mounted on said lever portion for clamping said yarn on said control roller in said first control position when said device is in said inserting position and releasing said control roller in said second control position so that said control roller cooperates with said withdrawal means in said second angular position of said first part when said control device is in said operative position, said control device further including a take-up controlling second part.
 6. Apparatus as claimed in claim 5 wherein said first part includes guide means for guiding the yarn along said devious path in said first angular position and being retracted from said yarn in said second angular position so that said yarn extends along said shorter path between said withdrawal means and said take-up means in said second angular position.
 7. Apparatus as claimed in claim 6 wherein said guide means of said first part of said control device include a yarn guide mounted on said control lever and moving with said control lever and said first part.
 8. Apparatus as claimed in claim 7, wherein said withdrawal means includes a continuously rotating withdrawal roller on which said control roller abuts in said second angular position of said first part while said control lever is in said second control position; and wherein said yarn guide places said yarn between said control roller and withdrawal roller during movement of said first part to said second angular position so that said yarn is withdrawn in said operative position of said control device.
 9. Apparatus as claimed in claim 6 wherein said guide means include a yarn guide mounted on said first part for angular movement, a link connected at one end with said yarn guide, and a pivot connecting the other end of said link with said second part so that said yarn guide moves between a yarn guiding position and an inoperative position when said first and second parts move between said first and second angular positions, respectively.
 10. Apparatus as claimed in claim 9 wherein said guide means include an other yarn guide mounted on said first part for guiding said yarn along said devious path in said first angular position, and being retracted from said yarn in said second angular position of said first and second parts when said control device is in said operative position.
 11. Apparatus as claimed in claim 5, wherein said second part includes a support lever means mounted on said supporting shaft, and a support roller on the end of said lever means; wherein said take-up means include a continuously rotating winding roller and a take-up spool; wherein said support roller supports in said first angular position of said first and second parts Said take-up spool spaced from said winding roller, and permits abutment of said take-up spool on said winding roller in said second angular position of said first and second parts so that said yarn is wound up on said take-up spool in said operative position of said control device.
 12. Apparatus as claimed in claim 11 wherein said take-up means include a lever arm rotatably supporting said take-up spool and biassed by gravity to move said take-up spool in abutment with said support roller and said winding roller.
 13. Apparatus for splicing a yarn with newly spun yarn, comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said slack, and is transported to said take-up means, said control device including first and second parts moving relative to each other between first and second angular positions when said control device is in said inserting and operative positions, respectively, guide means mounted on said first part for angular movement, and link means connecting said guide means with said second part so that in said first angular position said guide means is in an operative position for guiding said yarn along said devious path, and releases said yarn in said second angular position when said control device is in said operative position. 